Air purifier



FIG. 1 is a front perspective view of an air purifier according to theinvention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a cross-sectional view thereof taken along line 8-8 of FIG. 2.

The broken lines depict portions of the air purifier that form no partof the claimed design.

CLAIM We claim the ornamental design for an air purifier, as shown anddescribed.